When comparing Superpowers vs GameMaker:Studio Marketplace, the Slant community recommends Superpowers for most people. In the question“What are the best 2D game engines?”Superpowers is ranked 56th while GameMaker:Studio Marketplace is ranked 58th. The most important reason people chose Superpowers is:

Pros

Pro

Lots of handy built-in editors

Pro

Supports both 2D and 3D

This isn't a 3D with 2D on the side type of engine. The scene-editor supports both 3D and 2D views, allowing ease of use no matter what type of game your making.

Pro

Easy to use programming language

Games can be published to the web with good performance, and the game-framework utilizes TypeScript to make programming games a little bit nicer.

Pro

Plugin based

The community can develop and release their own plugins to add additional features making game development easier. All of these plugins can be easily downloaded in the app.

Pro

Collaborative

You can spin up a server and work with other people at the same time.

Pro

Has a selection of free assetts

About 30 free assets are available.

Pro

Reasonably priced

Most assets are under $5. The more advanced assets can usually go for around $20-$25.

Cons

Con

Not frequently updated

Although it's got very nice features as is, and the team does respond to issues at a pretty good rate, the engine itself takes a little while to get updates. It's a 3-4 person team, and they need to work jobs on the side in order to bring in income.Even though the updates come out a little slower than other engines, the team is still very much committed to the project and still support it well.